EP 3733236 A4 20211027 - CATHETER AND METHOD FOR PRODUCING SAME
Title (en)
CATHETER AND METHOD FOR PRODUCING SAME
Title (de)
KATHETER UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
CATHÉTER ET SON PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
- JP 2017251953 A 20171227
- JP 2018045813 W 20181213
Abstract (en)
[origin: EP3733236A1] Provided are a catheter having excellent slidability that prevents a shaft from flattening after pressurization and a method for producing the catheter. A catheter (1) having a distal side and a proximal side includes:a shaft (2) having an outer tubular member (4), andan insertion member (3) wherein at least a part of the insertion member (3) in an axial direction thereof is disposed in the outer tubular member (4),at least one of the outer tubular member (4) or the insertion member (3) is a multilayer tube having a first layer (31) and a second layer (32) laminated with the first layer (31),in a cross-section perpendicular to an axial direction of the multilayer tube, a cross-sectional area ratio of the second layer (32) to the first layer (31) is 0.7 or less,at least one material included in the second layer (32) has a higher crystallinity degree than that of at least one material included in the first layer (31),at least one material included in the second layer (32) has a lower melting point than that of at least one material included in the first layer (31), andin the cross-section perpendicular to the axial direction of the multilayer tube, an initial roundness calculated by the following equation is 92% or more.initialroundness%=aminoraxisouterdiameterofthemultilayertube/amajoraxisouterdiameterofthemultilayertube×100
IPC 8 full level
A61M 25/00 (2006.01); A61M 25/098 (2006.01)
CPC (source: EP US)
A61L 29/049 (2013.01 - US); A61M 25/0009 (2013.01 - EP US); A61M 25/0026 (2013.01 - US); A61M 25/0045 (2013.01 - EP US); A61M 25/0102 (2013.01 - US); A61M 25/09 (2013.01 - US); A61M 25/10 (2013.01 - US); A61L 29/14 (2013.01 - US); A61M 25/0012 (2013.01 - EP); A61M 25/005 (2013.01 - EP); A61M 25/1036 (2013.01 - EP); A61M 25/104 (2013.01 - EP); A61M 2025/0059 (2013.01 - EP)
Citation (search report)
- [L] JP 2018011953 A 20180125 - KANEKA CORP
- [A] US 2016339211 A1 20161124 - LEE JEONG S [US], et al
- [A] US 6010521 A 20000104 - LEE JEONG SOO [US], et al
- [A] US 7273487 B1 20070925 - DUCHAMP JACKY G [US], et al
- See references of WO 2019131158A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3733236 A1 20201104; EP 3733236 A4 20211027; CN 111542364 A 20200814; CN 111542364 B 20220715; JP 2023053999 A 20230413; JP WO2019131158 A1 20201224; US 11684748 B2 20230627; US 2021052850 A1 20210225; WO 2019131158 A1 20190704
DOCDB simple family (application)
EP 18897817 A 20181213; CN 201880083730 A 20181213; JP 2018045813 W 20181213; JP 2019562967 A 20181213; JP 2023015377 A 20230203; US 201816957641 A 20181213